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Al2O3 ceramic and titanium ring diffusion connection method

A diffusion connection, al2o3 technology, applied in the field of welding, can solve the problems of poor biocompatibility, not meeting the requirements of structural implantation, etc., and achieve the effect of high welding quality and great application prospects.

Inactive Publication Date: 2017-02-01
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, better Al can be obtained by using Ag-based solder. 2 o 3 Brazing joints of ceramics and titanium, however, the interface of Ag-based solders has poor biocompatibility and does not meet the implantation requirements of the structure, so Ag-based solders cannot be used for connection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: A Diffusion Bonded Al 2 o 3 A method for ceramic and titanium rings comprising the steps of:

[0017] (1), will be connected Al 2 o 3 Ultrasonic cleaning of ceramic and titanium rings in acetone for 10 minutes;

[0018] (2) Place the titanium ring facing down on the Al 2 o 3 The surface to be connected of the ceramic sheet is assembled into Al 2 o 3 Assemblies for ceramic / titanium rings;

[0019] (3), the assembly obtained in step (2) is placed in a vacuum heating furnace, and the applied pressure is 15MPa. When the vacuum degree reaches 1.3×10 -3 At Pa, turn on the heating, control the heating rate to 15°C / min, raise the temperature to 1000°C, then keep it warm for 60minmin, then control the cooling rate to 3°C / min, cool to 300°C, and then cool with the furnace to complete the diffusion bonding Al 2 o 3 Ceramic and titanium rings.

[0020] Al in the present invention 2 o 3 The ceramic and titanium rings can be successfully connected, and the Al ...

Embodiment 2

[0021] Example 2: A diffusion bonded Al 2 o 3 The method of ceramic and titanium rings is specifically completed according to the following steps:

[0022] (1), will be connected Al 2 o 3 Ultrasonic cleaning of ceramic and titanium rings in acetone for 8 minutes;

[0023] (2) Place the titanium ring facing down on the Al 2 o 3 The surface to be connected of the ceramic sheet is assembled into Al 2 o 3 Assemblies for ceramic / titanium rings;

[0024] (3), place the assembly obtained in step (2) in a vacuum heating furnace, apply a pressure of 1MPa, and when the vacuum degree reaches 2.0×10 -3 At Pa, turn on the electric heating, control the heating rate to 5°C / min, raise the temperature to 950°C, and then keep it for 70 minutes, then control the cooling rate to 10°C / min, cool to 300°C, and then cool with the furnace to complete the diffusion bonding Al 2 o 3 Ceramic and titanium ring approach.

Embodiment 3

[0025] Embodiment 3: In this embodiment, a diffusion bonded Al 2 o 3 The method of ceramic and titanium rings is specifically completed according to the following steps:

[0026] (1), will be connected Al 2 o 3 Ultrasonic cleaning of ceramic and titanium rings in acetone for 5 minutes;

[0027] (2) Place the titanium ring facing down on the Al 2 o 3 The surface to be connected of the ceramic sheet is assembled into Al 2 o 3 Assemblies for ceramic / titanium rings;

[0028] (3), place the assembly obtained in step (2) in a vacuum heating furnace, apply a pressure of 5MPa, and when the vacuum degree reaches 1.5×10 -3 At Pa, turn on the heating, control the heating rate to 10°C / min, raise the temperature to 950°C, and then keep it for 90 minutes, then control the cooling rate to 5°C / min, cool to 300°C, and then cool with the furnace to complete the diffusion bonding Al 2 o 3 Ceramic and titanium ring approach.

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PUM

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Abstract

The invention relates to an Al2O3 ceramic and titanium ring diffusion connection method. The method comprises putting an Al2O3 ceramic and a titanium ring to be connected into acetone, carrying out ultrasonic cleaning for 5-10min, putting the titanium ring of which the surface to be connected faces down on a surface of the Al2O3 ceramic slice to be connected, assembling the Al2O3 ceramic slice and the titanium ring to obtain an Al2O3 ceramic / titanium ring assembly, putting the assembly in a vacuum heating furnace, applying pressure until 1-15MPa, when a degree of vacuum is (1.3-2.0)*10<-3> Pa, carrying out electrical heating at a heating rate of 5-15 DEG C / min until a temperature of 900-1000 DEG C, carrying out thermal insulation for 60-120min, cooling the assembly to a temperature of 300 DEG C at a cooling rate of 3-10 DEG C / min, and carrying out furnace cooling so that Al2O3 ceramic and titanium ring diffusion connection is realized. The Al2O3 ceramic / titanium ring joint has a compact structure and high strength and can be used for an artificial retina structure.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to an Al 2 o 3 Diffusion bonding method of ceramic and titanium rings. Background technique [0002] With the advancement of science and technology, artificial retina technology has developed rapidly. This technology uses electronic devices to replace the retina that has lost its function, and uses electric current to stimulate the optic nerve that is still intact to help patients obtain basic vision. Al 2 o 3 Ceramics can be used in artificial retina structures due to their high strength and good insulating properties. As a material with good biocompatibility, titanium metal is often used in the field of implant medicine and can be used as a connector for artificial retinal structures. Therefore, Al 2 o 3 The ceramic discs are connected with titanium rings, which can be used as important structures in the artificial retina. [0003] Thanks Al 2 o 3 Ceramics and titanium ...

Claims

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Application Information

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IPC IPC(8): C04B37/02
CPCC04B37/021
Inventor 刘多宋晓国曹健张丽霞牛红伟冯吉才
Owner HARBIN INST OF TECH AT WEIHAI
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